Based upon this very short excerpt, I'd say it develops an atmosphere of chaos.
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The Meeker family and the rest of their friends in Redding, Connecticut. ... Right off the bat, we learn that the Meeker family has some drama coming their way. Sam has decided to become a soldier in the Continental Army. This means he's going to join the Patriots to fight for the American Colonies to be free from England.
A metaphor would be a figure of speech which makes an implicit or hidden comparison between two things that are unrelated but share common traits.
Example: the assignment was a piece of cake (which would mean the assignment was easy)
So comparing your family you could say they are a team cause they support you, or tree cause they are your roots I can't think of anything else but you get the idea!
i will answer it but what is the underlined word?